lambert asay



i." stmt uitte tutes IMPROVEMENT IN STAPLES FOR ARTIFICIAL TEETII.

@its .tljetule refont tu in tlgs't tetten nteut mit mating att nf tigestmt.

'IO ALL WI-IOM IT MAY CONGERN:

Bc it known that I,.J. LAMBERT ASAY, of Philadelphia, Pennsylvania, haveinvented an Improvement in Artificial Teeth; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawing, and to the letters ofreference markedthereon.

I My invention consists in the use of staples Awith their bent endsprojecting from artificial teeth as a means of firmly securingthe latterto vulcanizable gum plates or to Vulcanizable gum attached to metalplates, in the manner fully descrihedhereafter.

In order to enable others to make and use my invention, I will nowproceed to describe its construction and operation. v On reference tothe accompanying drawing, which forms a part of this specification-Figure I represents the inside of a block of teeth with my improvement.I

AFigure 2, a. sectional plan on the line 1 2, fig. 1; and

Figure 3, a modification of' my improvement.

A represents a block of three teeth, to which are connected threestaples a a a, made of platina or other wire capable of resisting theeli'ects of heat, the form of the staples being shown in fig. 2. Headsor notches are formed on the two ends of the wire which compose eachstaple, and these heads are'i'embedded in the material of' which theteeth are formed while the said material is in a plastic state and isbeing reduced to the desired shape by the ordinary moulds or otherwise,so that when the teeth are properly` baked the heads will render thewithdrawal of the staples, without breakingr the teeth, impossible. Itwill be seen that the staples projectbeyond the rear ofthe teeth so.that the gum, while still in a plastic state and prior to thevulcanizing of the same, may be forced between` the rear of theteeth andthe bent portionof thc staples, the projectingportions of the latterbeing thus thoroughly embedded in the gum. After the latter has beenvulcanized by the usual process, and thereby reduced to the well-knowntough and hard state, itlwill he impossible to detach the teeth from thegum plate without tearing and disintegrating the latter or breaking thestaples, the projecting portions of which are embedded in, surrounded,and held by the vulcanized gum.

The'superiority of the staples as a mode of securing the teeth to thegum plate over the ordinary-headed 'pins or bent wires will be evidentwithout further description.

In some cases the staples may be attached to the teeth in the mannershown in fig. 2i; in fact, the disposal and thenumberoi` staples usedwill in a great measuredepend upon the form and size of the teeth or theextent A of the block.

I do not claim, broadly, combining metallic staples with artificialteeth, as such'a combination is described in the patent of DanielHarrington, granted December I0, 1840, who, however, embedded the bentportion of the staples in the teeth instead of allowing them to projecttherefronnas in my improvements. l

I claim as my invention, and desire to secure by Letters Patent- The useot' staples a, with their bent portions projecting from the teeth, as a.means of securing the latter to a vulcanizable gum plate gr tovulcanizable vgum attached to a metal plate, asvand for the purposeherein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

J. LAMBERT ASAY.

Witnesses:

HENRY HowseN, Jolnv THOMPSON.

